Location

Snowbird, UT, USA

Start Date

1-1-1999 12:00 AM

Description

The introduction of new, advanced composite materials into aviation systems requires a thorough understanding of the long term effects of combined thermal and mechanical loading upon those materials. Analytical methods investigating the effects of intense thermal heating combined with mechanical loading have been investigated by Griffis, et al. [1] and Chen, et al. [2]. Schubbe and Mall [3] and Castelli, et al. [4] have experimentally investigated both in-phase (maximum temperature at maximum load) and out-of-phase (maximum temperature at minimum load) thermal-mechanical cycling on composites. Both authors found that the damage mechanisms and fatigue lives were dependent on test parameters as well as stress levels. Castelli, et al. [4] identified matrix dominated failure modes for out-of-phase cycling and fiber dominated damage modes for in-phase cycling.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

18B

Chapter

Chapter 5: Engineered Materials

Section

Composites

Pages

1233-1240

DOI

10.1007/978-1-4615-4791-4_158

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Lamb Wave Stiffness Characterization of Composites Undergoing Thermal-Mechanical Aging

Snowbird, UT, USA

The introduction of new, advanced composite materials into aviation systems requires a thorough understanding of the long term effects of combined thermal and mechanical loading upon those materials. Analytical methods investigating the effects of intense thermal heating combined with mechanical loading have been investigated by Griffis, et al. [1] and Chen, et al. [2]. Schubbe and Mall [3] and Castelli, et al. [4] have experimentally investigated both in-phase (maximum temperature at maximum load) and out-of-phase (maximum temperature at minimum load) thermal-mechanical cycling on composites. Both authors found that the damage mechanisms and fatigue lives were dependent on test parameters as well as stress levels. Castelli, et al. [4] identified matrix dominated failure modes for out-of-phase cycling and fiber dominated damage modes for in-phase cycling.